psyosphere: Analyse GPS Data

Analyse location data such as latitude,
longitude, and elevation. Based on spherical trigonometry, variables such as
speed, bearing, and distances can be calculated from moment to moment,
depending on the sampling frequency of the equipment used, and independent
of scale. Additionally, the package can plot tracks, coordinates, and shapes
on maps, and sub-tracks can be selected with point-in-polygon or other
techniques. The package is optimized to support behavioural science
experiments with multiple tracks. It can detect and clean up errors in the
data, and resulting data can be exported to be analysed in statistical
software or geographic information systems (GIS).